That problem's easily solved. Render the original unconscious before performing the transfer. Keep it in a coma for a few days while verifying the duplicate works as expected, then pull the plug.
If the transfer is successful, from your point of view you went to sleep in one body and woke up in another. If it failed, you'll fall asleep and then wake up a few days later.
That's not solving the problem, it's avoiding thinking about it. I said you were awake on purpose, it's a condition of the thought experiment; it makes you address what you means.
If the transfer is successful, from your point of view you went to sleep in one body and woke up in another. If it failed, you'll fall asleep and then wake up a few days later.